GREEN ISLAND HILLS WATER ASSN
PWS ID: WA5300429 · Mount Vernon, Washington 98273
Population Served
265
Total Violations
490
Health-Based Violations
0
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 77
- County
- Island
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 488
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| cis-1,2-Dichloroethylene | MR | 24 | 2007 |
| DICHLOROMETHANE | MR | 24 | 2007 |
| o-Dichlorobenzene | MR | 24 | 2007 |
| p-Dichlorobenzene | MR | 24 | 2007 |
| Vinyl chloride | MR | 24 | 2007 |
| 1,1,1-Trichloroethane | MR | 24 | 2007 |
| Carbon tetrachloride | MR | 24 | 2007 |
| Trichloroethylene | MR | 24 | 2007 |
| 1,1,2-Trichloroethane | MR | 24 | 2007 |
| Styrene | MR | 24 | 2007 |
| 1,2,4-Trichlorobenzene | MR | 24 | 2007 |
| Toluene | MR | 24 | 2007 |
| Ethylbenzene | MR | 24 | 2007 |
| 1,1-Dichloroethylene | MR | 24 | 2007 |
| trans-1,2-Dichloroethylene | MR | 24 | 2007 |
| 1,2-Dichloroethane | MR | 24 | 2007 |
| Tetrachloroethylene | MR | 24 | 2007 |
| CHLOROBENZENE | MR | 24 | 2007 |
| Benzene | MR | 24 | 2007 |
| 1,2-Dichloropropane | MR | 24 | 2007 |
| Consumer Confidence Rule | Other | 2 | 2017 |
| Arsenic | MR | 1 | 1979 |
| Fluoride | MR | 1 | 1979 |
| Cadmium | MR | 1 | 1979 |
| Nitrate | MR | 1 | 1979 |
| Mercury | MR | 1 | 1979 |
| Barium | MR | 1 | 1979 |
| Chromium | MR | 1 | 1979 |
| Selenium | MR | 1 | 1979 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.